Speaker
Prof.
Yuji Koike
(Department of Physics, Niigata University)
Description
We derive a complete set of relations among twist-3 distribution and fragmentation functions based on the QCD equation-of-motion and identities among nonlocal operators which fully incorporate the constraints from Lorentz invariance. We show that the dynamical twist-3 functions constitute a complete set of twist-3 functions and other types of twist-3 functions can be expressed in terms of the dynamical ones and the twist-2 functions. We also show that those relations guarantee the frame-independence of the twist-3 observables.
Primary author
Prof.
Yuji Koike
(Department of Physics, Niigata University)
Co-authors
Prof.
Andreas Metz
(Temple University)
Dr
Daniel Pitonyak
(RIKEN BNL Research Center)
Dr
Koichi Kanazawa
(Temple University)
Dr
Marc Schlegel
(University of Tuebingen)
